They have a male gonad on one side and a female on the other.
They are common on shallow, flat reefs and low-shore rocks.
They are a small species found in groups under stones.
Dense beds form from mid-intertidal up to a few metres deep.
It is a pair of flat, brown, horny discs with a diameter of 20mm.
They have smooth and shiny shell valves and a wide girdle.
They are so called as half of the rear shell has fibrous hairs.
Heart clams burrow in sub-tidal sands.
Otter shells are large and elongate in shape.
They have wavy ridges along the length of the shell.
They have distinctive finely pitted valves with radiating ridges.
It is a shell with up to 30 distinctive ridges
They are found on the undersides of boulders in rock pools.
Fairly common in clean sand and gravel in low water.
They are a popular food source and bait.
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